Previous answer is Higo Kami Tachibana Yoshitsugu Saku.
Kinzoganmei(gold inlay) Enpo 6Nen 6 Gatsu 10 Hi Hutatsu do Setudan
Yamano Kanjyuro Hisahide Kao.

Special feature : from the Jyuyo token zuhu.
Higo Kami Yoshitsugu was born at Hitachi province and muved to Edo.
At shiokome shurine at Miyazaki prefecture, a sword was dedicated by Yamano Kanjyuro Hisahide which is very wide wakizashi which was named Higo Kami Yoshitsugu. The signature is mentioned as follow.
So the reason he lived Hitachi province. He was reported as a student of the Hojyoji Masahiro and got the title of Higo no Kami. At Kanbun era, he became a craftman of the Shimazu daimyo family and moved to Kagoshima
His subjects looks like Kotetsu and Kazusa Kami Kaneshige which swords are Gunome midare with thick nioikuch like this sword.
Some parts are aranie sunagashi, and Kinsuji scatter brigth Hamon.
This sword is one of the top ranking of his swords which is very active and Koto style.
There are some saidanmei swords in Yoshitsugu but it is quite rare cutting test by Yamano Kanjyuro Hisahide.
We can see the Kinzoganmei by Takao Jindaiyu, Aida Kunishiro are popular on the Yoshitsugu.
It is very precious data because the cutting test was done by Yamano Kanjyuro Hisahide.
I think the Hamon of the blade looks like Koto Norishige Oosa.

Hint

Blade length : 77 cm or 30.31 inches.
Sori : 1.2 cm or 0.47 inches.
Mekugi: 2
Width at the hamachi : 3.65 cm or 1.43 inches.
Width at the Kissaki : 1.2 cm or 0.47 inches.
Kasane : 0.8 cm or 0.31 inches.
Era : Nanbokucho period.
Shape : The blade is wide and thick and long kissaki.
The blade is oo suriage(cut shortened) sword.
Jitetsu : Itame hada and Mokume hada mixed with Jinie attach.
Hamon : Niedeki suguha with Notare. And Gunome midare with and deep Nioikuchi. There are many Kinsuji.